It is not recommended to mix case halves as they are line bored as a unit at the factory. The differences between the two is pulse lines, other than that I believe they are identical. Cranks are same in all the years of GPR's

It is not recommended to mix case halfs as they are line bored as a unit at the factory. The differences between the two is pulse lines, other than that I believe they are identical. Cranks are same in all the years of GPR's